test: adjust capd dockerfile so the binary exposes the package in the…

… built binraries path variable

hack/docker-image-verify.sh

@@ -51,7 +51,7 @@ for arch in ${ALL_ARCH}; do
   TESTIMAGE "${REGISTRY}/cluster-api-controller-${arch}:${TAG}" "${arch}" "sigs.k8s.io/cluster-api$"
   TESTIMAGE "${REGISTRY}/kubeadm-bootstrap-controller-${arch}:${TAG}" "${arch}" "sigs.k8s.io/cluster-api/bootstrap/kubeadm$"
   TESTIMAGE "${REGISTRY}/kubeadm-control-plane-controller-${arch}:${TAG}" "${arch}" "sigs.k8s.io/cluster-api/controlplane/kubeadm$"
-  TESTIMAGE "${REGISTRY}/capd-manager-${arch}:${TAG}" "${arch}" "command-line-arguments$"
+  TESTIMAGE "${REGISTRY}/capd-manager-${arch}:${TAG}" "${arch}" "sigs.k8s.io/cluster-api/test/infrastructure/docker$"
   TESTIMAGE "${REGISTRY}/capim-manager-${arch}:${TAG}" "${arch}" "sigs.k8s.io/cluster-api/test/infrastructure/inmemory$"
   TESTIMAGE "${REGISTRY}/test-extension-${arch}:${TAG}" "${arch}" "sigs.k8s.io/cluster-api/test/extension$"
   TESTIMAGE "${REGISTRY}/clusterctl-${arch}:${TAG}" "${arch}" "sigs.k8s.io/cluster-api/cmd/clusterctl$" "clusterctl"

test/infrastructure/docker/Dockerfile

@@ -63,7 +63,7 @@ ARG ARCH
 # Build the CAPD manager using the compiler cache folder
 RUN --mount=type=cache,target=/root/.cache/go-build \
     --mount=type=cache,target=/go/pkg/mod \
-    CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} go build -trimpath -a -o /workspace/manager main.go
+    CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} go build -trimpath -a -o /workspace/manager .
 
 # NOTE: CAPD can't use non-root because docker requires access to the docker socket